Not exact, but there's a thread like this I saw recently:
https://www.susans.org/forums/index.php/topic,92376.msg673017.html#msg673017And it is really weird seeing my name in front of your posts, I just had to say.
I knew I would transition if I could since I was 11, but I didn't know I could. By the time I realised I could, at either 14 or 15, I was scared because I knew practically nothing about it, I was worried about how my parents would respond, and the idea of change was terrifying to me. Then I got a boyfriend, was open with him about it, and as soon as he called me his boyfriend I knew it was right. Female pronouns started seeming more wrong than they had before. And I had been suicidal for years, so even knowing that someone could love me as a guy, even though I was biologically female, was enough to push me to transition.
It was very... not optional for me. When I planned to live as a woman I also planned to die in my 20s. When I started to live like a man, I wanted to live into old age. I was reassured because every step in transition felt right, and made me happier. From the first male pronoun from my boyfriend, to my first "sir," to my first time binding, to my first time stealth, all the way to the crunching of my voice as it dropped on testosterone.
I've also had some gender fluidity, and that made me hesitate for a long while. However, when in a feminine mood, I looked at a photo of me looking as masculine as possible, and asked myself if I still wanted to be that guy. And I did. I thought about which words were more appropriate in reference to me - a boyfriend or a girlfriend, a son or a daughter. I always wanted the male versions, even when my dysphoria was minimal. Another interesting thing - when I was okay with androgyny or even femininity, I was also okay with the idea of me being masculine, with my masculine experiences. When feeling masculine, it was repulsive to think about me being feminine.